public void AttachPromotionToItemTest_itemNotInCart_nothingHappens() {
ShoppingCart cart = new ShoppingCart();
Item item = new Item("Apple");
Item item2 = new Item("Bananas");
cart.AddItem(item);
cart.AttachPromotionToItem(item2, new QuantityPricePromotion(item2, "[email protected]"));
LineItem lineItem = cart.GetLineItemForItem(item);
Assert.IsNull(lineItem.Promotion);
}
public void AttachPromotionToItemTest_nullItem_expectException() {
ShoppingCart cart = new ShoppingCart();
cart.AttachPromotionToItem(null, new QuantityPricePromotion(new Item("Apple"), "[email protected]"));
}
public void AttachPromotionToItemTest_nullPromotion_expectException() {
ShoppingCart cart = new ShoppingCart();
cart.AttachPromotionToItem(new Item("Apple"), null);
}
public void ApplyPromotion(ShoppingCart cart) {
cart.AttachPromotionToItem(item, this);
}
